当使用tty端口发布到Linux机器时，.NET核心串行类不能在BaseStream或ReadBuffer中读取超过4K字节的数据

using System;
using System.IO.Ports;
using System.Threading.Tasks;

public class SerialPortReader
{
    private SerialPort _serialPort;

    public SerialPortReader(string portName)
    {
        _serialPort = new SerialPort(portName);
    }

    public async Task<string> ReadDataAsync()
    {
        _serialPort.Open();

        int bufferSize = 4096; // 设置缓冲区大小
        byte[] buffer = new byte[bufferSize];
        int bytesRead = 0;
        string data = "";

        while (true)
        {
            bytesRead = await _serialPort.BaseStream.ReadAsync(buffer, 0, bufferSize);
            data += System.Text.Encoding.Default.GetString(buffer, 0, bytesRead);

            if (bytesRead < bufferSize)
            {
                break;
            }
        }

        _serialPort.Close();

        return data;
    }
}

// 使用示例
public class Program
{
    public static async Task Main(string[] args)
    {
        SerialPortReader reader = new SerialPortReader("/dev/ttyUSB0");
        string data = await reader.ReadDataAsync();
        Console.WriteLine(data);
    }
}